JWileymisc (version 1.4.1)

plot.modelDiagnostics.lm: Plot Diagnostics for an lm model

Description

This function creates a number of diagnostic plots from lm models.

Usage

# S3 method for modelDiagnostics.lm
plot(x, y, plot = TRUE, ask = TRUE, ncol, ...)

Value

a list including plots of the residuals, residuals versus fitted values

Arguments

x

A modelDiagnostics class object from lm.

y

Included to match the generic. Not used.

plot

A logical value whether or not to plot the results or simply return the graaphical objects.

ask

A logical whether to ask before changing plots. Only applies to interactive environments.

ncol

The number of columns to use for plots. Missing by default which means individual plots are created. If specified, plots are put together in a grid.

...

Included to match the generic. Not used.

Examples

testm <- stats::lm(mpg ~ hp * factor(cyl), data = mtcars)

md <- modelDiagnostics(testm, ev.perc = .1)

plot(md)
plot(md, ncol = 2)

## clean up
rm(testm, md)